| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus 1 and a method for cleaning a pipeline, in each of which foreign matter such as the scale on the inside of the pipeline is removed efficiently without damaging a paint layer 12A of a water pipe 12 and a hygienic state in the water pipe 12 is improved drastically by a sterilizing effect. <P>SOLUTION: When the operation is made to clean the pipeline, a mixed fluid W of very coarse granular sand 4a with ozone-containing water is sucked into the water pipe 12, made to come into a smooth slurried state and passes through a conduit line 9 and a joint pipe 9a while sliding on a blade 24 of a whirling flow formation cylinder 23. At that process, the mixed fluid W in the slurried state flows through the water pipe 12 along a whirling flow Sp and rubs the paint layer 12A thoroughly, to efficiently rub off the foreign matter stuck to the paint layer 12A. <P>COPYRIGHT: (C)2012,JPO&INPIT |
